1 /* 2 * Copyright (c) 2008-2009 Atheros Communications Inc. 3 * 4 * Permission to use, copy, modify, and/or distribute this software for any 5 * purpose with or without fee is hereby granted, provided that the above 6 * copyright notice and this permission notice appear in all copies. 7 * 8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 15 */ 16 17 #include <linux/slab.h> 18 #include <asm/unaligned.h> 19 20 #include "ath9k.h" 21 22 #define REG_WRITE_D(_ah, _reg, _val) \ 23 ath9k_hw_common(_ah)->ops->write((_ah), (_val), (_reg)) 24 #define REG_READ_D(_ah, _reg) \ 25 ath9k_hw_common(_ah)->ops->read((_ah), (_reg)) 26 27 static struct dentry *ath9k_debugfs_root; 28 29 static int ath9k_debugfs_open(struct inode *inode, struct file *file) 30 { 31 file->private_data = inode->i_private; 32 return 0; 33 } 34 35 #ifdef CONFIG_ATH_DEBUG 36 37 static ssize_t read_file_debug(struct file *file, char __user *user_buf, 38 size_t count, loff_t *ppos) 39 { 40 struct ath_softc *sc = file->private_data; 41 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 42 char buf[32]; 43 unsigned int len; 44 45 len = snprintf(buf, sizeof(buf), "0x%08x\n", common->debug_mask); 46 return simple_read_from_buffer(user_buf, count, ppos, buf, len); 47 } 48 49 static ssize_t write_file_debug(struct file *file, const char __user *user_buf, 50 size_t count, loff_t *ppos) 51 { 52 struct ath_softc *sc = file->private_data; 53 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 54 unsigned long mask; 55 char buf[32]; 56 ssize_t len; 57 58 len = min(count, sizeof(buf) - 1); 59 if (copy_from_user(buf, user_buf, len)) 60 return -EINVAL; 61 62 buf[len] = '\0'; 63 if (strict_strtoul(buf, 0, &mask)) 64 return -EINVAL; 65 66 common->debug_mask = mask; 67 return count; 68 } 69 70 static const struct file_operations fops_debug = { 71 .read = read_file_debug, 72 .write = write_file_debug, 73 .open = ath9k_debugfs_open, 74 .owner = THIS_MODULE 75 }; 76 77 #endif 78 79 #define DMA_BUF_LEN 1024 80 81 static ssize_t read_file_tx_chainmask(struct file *file, char __user *user_buf, 82 size_t count, loff_t *ppos) 83 { 84 struct ath_softc *sc = file->private_data; 85 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 86 char buf[32]; 87 unsigned int len; 88 89 len = snprintf(buf, sizeof(buf), "0x%08x\n", common->tx_chainmask); 90 return simple_read_from_buffer(user_buf, count, ppos, buf, len); 91 } 92 93 static ssize_t write_file_tx_chainmask(struct file *file, const char __user *user_buf, 94 size_t count, loff_t *ppos) 95 { 96 struct ath_softc *sc = file->private_data; 97 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 98 unsigned long mask; 99 char buf[32]; 100 ssize_t len; 101 102 len = min(count, sizeof(buf) - 1); 103 if (copy_from_user(buf, user_buf, len)) 104 return -EINVAL; 105 106 buf[len] = '\0'; 107 if (strict_strtoul(buf, 0, &mask)) 108 return -EINVAL; 109 110 common->tx_chainmask = mask; 111 sc->sc_ah->caps.tx_chainmask = mask; 112 return count; 113 } 114 115 static const struct file_operations fops_tx_chainmask = { 116 .read = read_file_tx_chainmask, 117 .write = write_file_tx_chainmask, 118 .open = ath9k_debugfs_open, 119 .owner = THIS_MODULE 120 }; 121 122 123 static ssize_t read_file_rx_chainmask(struct file *file, char __user *user_buf, 124 size_t count, loff_t *ppos) 125 { 126 struct ath_softc *sc = file->private_data; 127 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 128 char buf[32]; 129 unsigned int len; 130 131 len = snprintf(buf, sizeof(buf), "0x%08x\n", common->rx_chainmask); 132 return simple_read_from_buffer(user_buf, count, ppos, buf, len); 133 } 134 135 static ssize_t write_file_rx_chainmask(struct file *file, const char __user *user_buf, 136 size_t count, loff_t *ppos) 137 { 138 struct ath_softc *sc = file->private_data; 139 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 140 unsigned long mask; 141 char buf[32]; 142 ssize_t len; 143 144 len = min(count, sizeof(buf) - 1); 145 if (copy_from_user(buf, user_buf, len)) 146 return -EINVAL; 147 148 buf[len] = '\0'; 149 if (strict_strtoul(buf, 0, &mask)) 150 return -EINVAL; 151 152 common->rx_chainmask = mask; 153 sc->sc_ah->caps.rx_chainmask = mask; 154 return count; 155 } 156 157 static const struct file_operations fops_rx_chainmask = { 158 .read = read_file_rx_chainmask, 159 .write = write_file_rx_chainmask, 160 .open = ath9k_debugfs_open, 161 .owner = THIS_MODULE 162 }; 163 164 165 static ssize_t read_file_dma(struct file *file, char __user *user_buf, 166 size_t count, loff_t *ppos) 167 { 168 struct ath_softc *sc = file->private_data; 169 struct ath_hw *ah = sc->sc_ah; 170 char *buf; 171 int retval; 172 unsigned int len = 0; 173 u32 val[ATH9K_NUM_DMA_DEBUG_REGS]; 174 int i, qcuOffset = 0, dcuOffset = 0; 175 u32 *qcuBase = &val[0], *dcuBase = &val[4]; 176 177 buf = kmalloc(DMA_BUF_LEN, GFP_KERNEL); 178 if (!buf) 179 return 0; 180 181 ath9k_ps_wakeup(sc); 182 183 REG_WRITE_D(ah, AR_MACMISC, 184 ((AR_MACMISC_DMA_OBS_LINE_8 << AR_MACMISC_DMA_OBS_S) | 185 (AR_MACMISC_MISC_OBS_BUS_1 << 186 AR_MACMISC_MISC_OBS_BUS_MSB_S))); 187 188 len += snprintf(buf + len, DMA_BUF_LEN - len, 189 "Raw DMA Debug values:\n"); 190 191 for (i = 0; i < ATH9K_NUM_DMA_DEBUG_REGS; i++) { 192 if (i % 4 == 0) 193 len += snprintf(buf + len, DMA_BUF_LEN - len, "\n"); 194 195 val[i] = REG_READ_D(ah, AR_DMADBG_0 + (i * sizeof(u32))); 196 len += snprintf(buf + len, DMA_BUF_LEN - len, "%d: %08x ", 197 i, val[i]); 198 } 199 200 len += snprintf(buf + len, DMA_BUF_LEN - len, "\n\n"); 201 len += snprintf(buf + len, DMA_BUF_LEN - len, 202 "Num QCU: chain_st fsp_ok fsp_st DCU: chain_st\n"); 203 204 for (i = 0; i < ATH9K_NUM_QUEUES; i++, qcuOffset += 4, dcuOffset += 5) { 205 if (i == 8) { 206 qcuOffset = 0; 207 qcuBase++; 208 } 209 210 if (i == 6) { 211 dcuOffset = 0; 212 dcuBase++; 213 } 214 215 len += snprintf(buf + len, DMA_BUF_LEN - len, 216 "%2d %2x %1x %2x %2x\n", 217 i, (*qcuBase & (0x7 << qcuOffset)) >> qcuOffset, 218 (*qcuBase & (0x8 << qcuOffset)) >> (qcuOffset + 3), 219 val[2] & (0x7 << (i * 3)) >> (i * 3), 220 (*dcuBase & (0x1f << dcuOffset)) >> dcuOffset); 221 } 222 223 len += snprintf(buf + len, DMA_BUF_LEN - len, "\n"); 224 225 len += snprintf(buf + len, DMA_BUF_LEN - len, 226 "qcu_stitch state: %2x qcu_fetch state: %2x\n", 227 (val[3] & 0x003c0000) >> 18, (val[3] & 0x03c00000) >> 22); 228 len += snprintf(buf + len, DMA_BUF_LEN - len, 229 "qcu_complete state: %2x dcu_complete state: %2x\n", 230 (val[3] & 0x1c000000) >> 26, (val[6] & 0x3)); 231 len += snprintf(buf + len, DMA_BUF_LEN - len, 232 "dcu_arb state: %2x dcu_fp state: %2x\n", 233 (val[5] & 0x06000000) >> 25, (val[5] & 0x38000000) >> 27); 234 len += snprintf(buf + len, DMA_BUF_LEN - len, 235 "chan_idle_dur: %3d chan_idle_dur_valid: %1d\n", 236 (val[6] & 0x000003fc) >> 2, (val[6] & 0x00000400) >> 10); 237 len += snprintf(buf + len, DMA_BUF_LEN - len, 238 "txfifo_valid_0: %1d txfifo_valid_1: %1d\n", 239 (val[6] & 0x00000800) >> 11, (val[6] & 0x00001000) >> 12); 240 len += snprintf(buf + len, DMA_BUF_LEN - len, 241 "txfifo_dcu_num_0: %2d txfifo_dcu_num_1: %2d\n", 242 (val[6] & 0x0001e000) >> 13, (val[6] & 0x001e0000) >> 17); 243 244 len += snprintf(buf + len, DMA_BUF_LEN - len, "pcu observe: 0x%x\n", 245 REG_READ_D(ah, AR_OBS_BUS_1)); 246 len += snprintf(buf + len, DMA_BUF_LEN - len, 247 "AR_CR: 0x%x\n", REG_READ_D(ah, AR_CR)); 248 249 ath9k_ps_restore(sc); 250 251 retval = simple_read_from_buffer(user_buf, count, ppos, buf, len); 252 kfree(buf); 253 return retval; 254 } 255 256 static const struct file_operations fops_dma = { 257 .read = read_file_dma, 258 .open = ath9k_debugfs_open, 259 .owner = THIS_MODULE 260 }; 261 262 263 void ath_debug_stat_interrupt(struct ath_softc *sc, enum ath9k_int status) 264 { 265 if (status) 266 sc->debug.stats.istats.total++; 267 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) { 268 if (status & ATH9K_INT_RXLP) 269 sc->debug.stats.istats.rxlp++; 270 if (status & ATH9K_INT_RXHP) 271 sc->debug.stats.istats.rxhp++; 272 } else { 273 if (status & ATH9K_INT_RX) 274 sc->debug.stats.istats.rxok++; 275 } 276 if (status & ATH9K_INT_RXEOL) 277 sc->debug.stats.istats.rxeol++; 278 if (status & ATH9K_INT_RXORN) 279 sc->debug.stats.istats.rxorn++; 280 if (status & ATH9K_INT_TX) 281 sc->debug.stats.istats.txok++; 282 if (status & ATH9K_INT_TXURN) 283 sc->debug.stats.istats.txurn++; 284 if (status & ATH9K_INT_MIB) 285 sc->debug.stats.istats.mib++; 286 if (status & ATH9K_INT_RXPHY) 287 sc->debug.stats.istats.rxphyerr++; 288 if (status & ATH9K_INT_RXKCM) 289 sc->debug.stats.istats.rx_keycache_miss++; 290 if (status & ATH9K_INT_SWBA) 291 sc->debug.stats.istats.swba++; 292 if (status & ATH9K_INT_BMISS) 293 sc->debug.stats.istats.bmiss++; 294 if (status & ATH9K_INT_BNR) 295 sc->debug.stats.istats.bnr++; 296 if (status & ATH9K_INT_CST) 297 sc->debug.stats.istats.cst++; 298 if (status & ATH9K_INT_GTT) 299 sc->debug.stats.istats.gtt++; 300 if (status & ATH9K_INT_TIM) 301 sc->debug.stats.istats.tim++; 302 if (status & ATH9K_INT_CABEND) 303 sc->debug.stats.istats.cabend++; 304 if (status & ATH9K_INT_DTIMSYNC) 305 sc->debug.stats.istats.dtimsync++; 306 if (status & ATH9K_INT_DTIM) 307 sc->debug.stats.istats.dtim++; 308 } 309 310 static ssize_t read_file_interrupt(struct file *file, char __user *user_buf, 311 size_t count, loff_t *ppos) 312 { 313 struct ath_softc *sc = file->private_data; 314 char buf[512]; 315 unsigned int len = 0; 316 317 if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) { 318 len += snprintf(buf + len, sizeof(buf) - len, 319 "%8s: %10u\n", "RXLP", sc->debug.stats.istats.rxlp); 320 len += snprintf(buf + len, sizeof(buf) - len, 321 "%8s: %10u\n", "RXHP", sc->debug.stats.istats.rxhp); 322 } else { 323 len += snprintf(buf + len, sizeof(buf) - len, 324 "%8s: %10u\n", "RX", sc->debug.stats.istats.rxok); 325 } 326 len += snprintf(buf + len, sizeof(buf) - len, 327 "%8s: %10u\n", "RXEOL", sc->debug.stats.istats.rxeol); 328 len += snprintf(buf + len, sizeof(buf) - len, 329 "%8s: %10u\n", "RXORN", sc->debug.stats.istats.rxorn); 330 len += snprintf(buf + len, sizeof(buf) - len, 331 "%8s: %10u\n", "TX", sc->debug.stats.istats.txok); 332 len += snprintf(buf + len, sizeof(buf) - len, 333 "%8s: %10u\n", "TXURN", sc->debug.stats.istats.txurn); 334 len += snprintf(buf + len, sizeof(buf) - len, 335 "%8s: %10u\n", "MIB", sc->debug.stats.istats.mib); 336 len += snprintf(buf + len, sizeof(buf) - len, 337 "%8s: %10u\n", "RXPHY", sc->debug.stats.istats.rxphyerr); 338 len += snprintf(buf + len, sizeof(buf) - len, 339 "%8s: %10u\n", "RXKCM", sc->debug.stats.istats.rx_keycache_miss); 340 len += snprintf(buf + len, sizeof(buf) - len, 341 "%8s: %10u\n", "SWBA", sc->debug.stats.istats.swba); 342 len += snprintf(buf + len, sizeof(buf) - len, 343 "%8s: %10u\n", "BMISS", sc->debug.stats.istats.bmiss); 344 len += snprintf(buf + len, sizeof(buf) - len, 345 "%8s: %10u\n", "BNR", sc->debug.stats.istats.bnr); 346 len += snprintf(buf + len, sizeof(buf) - len, 347 "%8s: %10u\n", "CST", sc->debug.stats.istats.cst); 348 len += snprintf(buf + len, sizeof(buf) - len, 349 "%8s: %10u\n", "GTT", sc->debug.stats.istats.gtt); 350 len += snprintf(buf + len, sizeof(buf) - len, 351 "%8s: %10u\n", "TIM", sc->debug.stats.istats.tim); 352 len += snprintf(buf + len, sizeof(buf) - len, 353 "%8s: %10u\n", "CABEND", sc->debug.stats.istats.cabend); 354 len += snprintf(buf + len, sizeof(buf) - len, 355 "%8s: %10u\n", "DTIMSYNC", sc->debug.stats.istats.dtimsync); 356 len += snprintf(buf + len, sizeof(buf) - len, 357 "%8s: %10u\n", "DTIM", sc->debug.stats.istats.dtim); 358 len += snprintf(buf + len, sizeof(buf) - len, 359 "%8s: %10u\n", "TOTAL", sc->debug.stats.istats.total); 360 361 return simple_read_from_buffer(user_buf, count, ppos, buf, len); 362 } 363 364 static const struct file_operations fops_interrupt = { 365 .read = read_file_interrupt, 366 .open = ath9k_debugfs_open, 367 .owner = THIS_MODULE 368 }; 369 370 void ath_debug_stat_rc(struct ath_softc *sc, int final_rate) 371 { 372 struct ath_rc_stats *stats; 373 374 stats = &sc->debug.stats.rcstats[final_rate]; 375 stats->success++; 376 } 377 378 void ath_debug_stat_retries(struct ath_softc *sc, int rix, 379 int xretries, int retries, u8 per) 380 { 381 struct ath_rc_stats *stats = &sc->debug.stats.rcstats[rix]; 382 383 stats->xretries += xretries; 384 stats->retries += retries; 385 stats->per = per; 386 } 387 388 static ssize_t read_file_rcstat(struct file *file, char __user *user_buf, 389 size_t count, loff_t *ppos) 390 { 391 struct ath_softc *sc = file->private_data; 392 char *buf; 393 unsigned int len = 0, max; 394 int i = 0; 395 ssize_t retval; 396 397 if (sc->cur_rate_table == NULL) 398 return 0; 399 400 max = 80 + sc->cur_rate_table->rate_cnt * 1024; 401 buf = kmalloc(max + 1, GFP_KERNEL); 402 if (buf == NULL) 403 return 0; 404 buf[max] = 0; 405 406 len += sprintf(buf, "%6s %6s %6s " 407 "%10s %10s %10s %10s\n", 408 "HT", "MCS", "Rate", 409 "Success", "Retries", "XRetries", "PER"); 410 411 for (i = 0; i < sc->cur_rate_table->rate_cnt; i++) { 412 u32 ratekbps = sc->cur_rate_table->info[i].ratekbps; 413 struct ath_rc_stats *stats = &sc->debug.stats.rcstats[i]; 414 char mcs[5]; 415 char htmode[5]; 416 int used_mcs = 0, used_htmode = 0; 417 418 if (WLAN_RC_PHY_HT(sc->cur_rate_table->info[i].phy)) { 419 used_mcs = snprintf(mcs, 5, "%d", 420 sc->cur_rate_table->info[i].ratecode); 421 422 if (WLAN_RC_PHY_40(sc->cur_rate_table->info[i].phy)) 423 used_htmode = snprintf(htmode, 5, "HT40"); 424 else if (WLAN_RC_PHY_20(sc->cur_rate_table->info[i].phy)) 425 used_htmode = snprintf(htmode, 5, "HT20"); 426 else 427 used_htmode = snprintf(htmode, 5, "????"); 428 } 429 430 mcs[used_mcs] = '\0'; 431 htmode[used_htmode] = '\0'; 432 433 len += snprintf(buf + len, max - len, 434 "%6s %6s %3u.%d: " 435 "%10u %10u %10u %10u\n", 436 htmode, 437 mcs, 438 ratekbps / 1000, 439 (ratekbps % 1000) / 100, 440 stats->success, 441 stats->retries, 442 stats->xretries, 443 stats->per); 444 } 445 446 retval = simple_read_from_buffer(user_buf, count, ppos, buf, len); 447 kfree(buf); 448 return retval; 449 } 450 451 static const struct file_operations fops_rcstat = { 452 .read = read_file_rcstat, 453 .open = ath9k_debugfs_open, 454 .owner = THIS_MODULE 455 }; 456 457 static const char * ath_wiphy_state_str(enum ath_wiphy_state state) 458 { 459 switch (state) { 460 case ATH_WIPHY_INACTIVE: 461 return "INACTIVE"; 462 case ATH_WIPHY_ACTIVE: 463 return "ACTIVE"; 464 case ATH_WIPHY_PAUSING: 465 return "PAUSING"; 466 case ATH_WIPHY_PAUSED: 467 return "PAUSED"; 468 case ATH_WIPHY_SCAN: 469 return "SCAN"; 470 } 471 return "?"; 472 } 473 474 static ssize_t read_file_wiphy(struct file *file, char __user *user_buf, 475 size_t count, loff_t *ppos) 476 { 477 struct ath_softc *sc = file->private_data; 478 char buf[512]; 479 unsigned int len = 0; 480 int i; 481 u8 addr[ETH_ALEN]; 482 483 len += snprintf(buf + len, sizeof(buf) - len, 484 "primary: %s (%s chan=%d ht=%d)\n", 485 wiphy_name(sc->pri_wiphy->hw->wiphy), 486 ath_wiphy_state_str(sc->pri_wiphy->state), 487 sc->pri_wiphy->chan_idx, sc->pri_wiphy->chan_is_ht); 488 for (i = 0; i < sc->num_sec_wiphy; i++) { 489 struct ath_wiphy *aphy = sc->sec_wiphy[i]; 490 if (aphy == NULL) 491 continue; 492 len += snprintf(buf + len, sizeof(buf) - len, 493 "secondary: %s (%s chan=%d ht=%d)\n", 494 wiphy_name(aphy->hw->wiphy), 495 ath_wiphy_state_str(aphy->state), 496 aphy->chan_idx, aphy->chan_is_ht); 497 } 498 499 put_unaligned_le32(REG_READ_D(sc->sc_ah, AR_STA_ID0), addr); 500 put_unaligned_le16(REG_READ_D(sc->sc_ah, AR_STA_ID1) & 0xffff, addr + 4); 501 len += snprintf(buf + len, sizeof(buf) - len, 502 "addr: %pM\n", addr); 503 put_unaligned_le32(REG_READ_D(sc->sc_ah, AR_BSSMSKL), addr); 504 put_unaligned_le16(REG_READ_D(sc->sc_ah, AR_BSSMSKU) & 0xffff, addr + 4); 505 len += snprintf(buf + len, sizeof(buf) - len, 506 "addrmask: %pM\n", addr); 507 508 return simple_read_from_buffer(user_buf, count, ppos, buf, len); 509 } 510 511 static struct ath_wiphy * get_wiphy(struct ath_softc *sc, const char *name) 512 { 513 int i; 514 if (strcmp(name, wiphy_name(sc->pri_wiphy->hw->wiphy)) == 0) 515 return sc->pri_wiphy; 516 for (i = 0; i < sc->num_sec_wiphy; i++) { 517 struct ath_wiphy *aphy = sc->sec_wiphy[i]; 518 if (aphy && strcmp(name, wiphy_name(aphy->hw->wiphy)) == 0) 519 return aphy; 520 } 521 return NULL; 522 } 523 524 static int del_wiphy(struct ath_softc *sc, const char *name) 525 { 526 struct ath_wiphy *aphy = get_wiphy(sc, name); 527 if (!aphy) 528 return -ENOENT; 529 return ath9k_wiphy_del(aphy); 530 } 531 532 static int pause_wiphy(struct ath_softc *sc, const char *name) 533 { 534 struct ath_wiphy *aphy = get_wiphy(sc, name); 535 if (!aphy) 536 return -ENOENT; 537 return ath9k_wiphy_pause(aphy); 538 } 539 540 static int unpause_wiphy(struct ath_softc *sc, const char *name) 541 { 542 struct ath_wiphy *aphy = get_wiphy(sc, name); 543 if (!aphy) 544 return -ENOENT; 545 return ath9k_wiphy_unpause(aphy); 546 } 547 548 static int select_wiphy(struct ath_softc *sc, const char *name) 549 { 550 struct ath_wiphy *aphy = get_wiphy(sc, name); 551 if (!aphy) 552 return -ENOENT; 553 return ath9k_wiphy_select(aphy); 554 } 555 556 static int schedule_wiphy(struct ath_softc *sc, const char *msec) 557 { 558 ath9k_wiphy_set_scheduler(sc, simple_strtoul(msec, NULL, 0)); 559 return 0; 560 } 561 562 static ssize_t write_file_wiphy(struct file *file, const char __user *user_buf, 563 size_t count, loff_t *ppos) 564 { 565 struct ath_softc *sc = file->private_data; 566 char buf[50]; 567 size_t len; 568 569 len = min(count, sizeof(buf) - 1); 570 if (copy_from_user(buf, user_buf, len)) 571 return -EFAULT; 572 buf[len] = '\0'; 573 if (len > 0 && buf[len - 1] == '\n') 574 buf[len - 1] = '\0'; 575 576 if (strncmp(buf, "add", 3) == 0) { 577 int res = ath9k_wiphy_add(sc); 578 if (res < 0) 579 return res; 580 } else if (strncmp(buf, "del=", 4) == 0) { 581 int res = del_wiphy(sc, buf + 4); 582 if (res < 0) 583 return res; 584 } else if (strncmp(buf, "pause=", 6) == 0) { 585 int res = pause_wiphy(sc, buf + 6); 586 if (res < 0) 587 return res; 588 } else if (strncmp(buf, "unpause=", 8) == 0) { 589 int res = unpause_wiphy(sc, buf + 8); 590 if (res < 0) 591 return res; 592 } else if (strncmp(buf, "select=", 7) == 0) { 593 int res = select_wiphy(sc, buf + 7); 594 if (res < 0) 595 return res; 596 } else if (strncmp(buf, "schedule=", 9) == 0) { 597 int res = schedule_wiphy(sc, buf + 9); 598 if (res < 0) 599 return res; 600 } else 601 return -EOPNOTSUPP; 602 603 return count; 604 } 605 606 static const struct file_operations fops_wiphy = { 607 .read = read_file_wiphy, 608 .write = write_file_wiphy, 609 .open = ath9k_debugfs_open, 610 .owner = THIS_MODULE 611 }; 612 613 #define PR(str, elem) \ 614 do { \ 615 len += snprintf(buf + len, size - len, \ 616 "%s%13u%11u%10u%10u\n", str, \ 617 sc->debug.stats.txstats[sc->tx.hwq_map[ATH9K_WME_AC_BE]].elem, \ 618 sc->debug.stats.txstats[sc->tx.hwq_map[ATH9K_WME_AC_BK]].elem, \ 619 sc->debug.stats.txstats[sc->tx.hwq_map[ATH9K_WME_AC_VI]].elem, \ 620 sc->debug.stats.txstats[sc->tx.hwq_map[ATH9K_WME_AC_VO]].elem); \ 621 } while(0) 622 623 static ssize_t read_file_xmit(struct file *file, char __user *user_buf, 624 size_t count, loff_t *ppos) 625 { 626 struct ath_softc *sc = file->private_data; 627 char *buf; 628 unsigned int len = 0, size = 2048; 629 ssize_t retval = 0; 630 631 buf = kzalloc(size, GFP_KERNEL); 632 if (buf == NULL) 633 return 0; 634 635 len += sprintf(buf, "%30s %10s%10s%10s\n\n", "BE", "BK", "VI", "VO"); 636 637 PR("MPDUs Queued: ", queued); 638 PR("MPDUs Completed: ", completed); 639 PR("Aggregates: ", a_aggr); 640 PR("AMPDUs Queued: ", a_queued); 641 PR("AMPDUs Completed:", a_completed); 642 PR("AMPDUs Retried: ", a_retries); 643 PR("AMPDUs XRetried: ", a_xretries); 644 PR("FIFO Underrun: ", fifo_underrun); 645 PR("TXOP Exceeded: ", xtxop); 646 PR("TXTIMER Expiry: ", timer_exp); 647 PR("DESC CFG Error: ", desc_cfg_err); 648 PR("DATA Underrun: ", data_underrun); 649 PR("DELIM Underrun: ", delim_underrun); 650 651 retval = simple_read_from_buffer(user_buf, count, ppos, buf, len); 652 kfree(buf); 653 654 return retval; 655 } 656 657 void ath_debug_stat_tx(struct ath_softc *sc, struct ath_txq *txq, 658 struct ath_buf *bf, struct ath_tx_status *ts) 659 { 660 if (bf_isampdu(bf)) { 661 if (bf_isxretried(bf)) 662 TX_STAT_INC(txq->axq_qnum, a_xretries); 663 else 664 TX_STAT_INC(txq->axq_qnum, a_completed); 665 } else { 666 TX_STAT_INC(txq->axq_qnum, completed); 667 } 668 669 if (ts->ts_status & ATH9K_TXERR_FIFO) 670 TX_STAT_INC(txq->axq_qnum, fifo_underrun); 671 if (ts->ts_status & ATH9K_TXERR_XTXOP) 672 TX_STAT_INC(txq->axq_qnum, xtxop); 673 if (ts->ts_status & ATH9K_TXERR_TIMER_EXPIRED) 674 TX_STAT_INC(txq->axq_qnum, timer_exp); 675 if (ts->ts_flags & ATH9K_TX_DESC_CFG_ERR) 676 TX_STAT_INC(txq->axq_qnum, desc_cfg_err); 677 if (ts->ts_flags & ATH9K_TX_DATA_UNDERRUN) 678 TX_STAT_INC(txq->axq_qnum, data_underrun); 679 if (ts->ts_flags & ATH9K_TX_DELIM_UNDERRUN) 680 TX_STAT_INC(txq->axq_qnum, delim_underrun); 681 } 682 683 static const struct file_operations fops_xmit = { 684 .read = read_file_xmit, 685 .open = ath9k_debugfs_open, 686 .owner = THIS_MODULE 687 }; 688 689 static ssize_t read_file_recv(struct file *file, char __user *user_buf, 690 size_t count, loff_t *ppos) 691 { 692 #define PHY_ERR(s, p) \ 693 len += snprintf(buf + len, size - len, "%18s : %10u\n", s, \ 694 sc->debug.stats.rxstats.phy_err_stats[p]); 695 696 struct ath_softc *sc = file->private_data; 697 char *buf; 698 unsigned int len = 0, size = 1152; 699 ssize_t retval = 0; 700 701 buf = kzalloc(size, GFP_KERNEL); 702 if (buf == NULL) 703 return 0; 704 705 len += snprintf(buf + len, size - len, 706 "%18s : %10u\n", "CRC ERR", 707 sc->debug.stats.rxstats.crc_err); 708 len += snprintf(buf + len, size - len, 709 "%18s : %10u\n", "DECRYPT CRC ERR", 710 sc->debug.stats.rxstats.decrypt_crc_err); 711 len += snprintf(buf + len, size - len, 712 "%18s : %10u\n", "PHY ERR", 713 sc->debug.stats.rxstats.phy_err); 714 len += snprintf(buf + len, size - len, 715 "%18s : %10u\n", "MIC ERR", 716 sc->debug.stats.rxstats.mic_err); 717 len += snprintf(buf + len, size - len, 718 "%18s : %10u\n", "PRE-DELIM CRC ERR", 719 sc->debug.stats.rxstats.pre_delim_crc_err); 720 len += snprintf(buf + len, size - len, 721 "%18s : %10u\n", "POST-DELIM CRC ERR", 722 sc->debug.stats.rxstats.post_delim_crc_err); 723 len += snprintf(buf + len, size - len, 724 "%18s : %10u\n", "DECRYPT BUSY ERR", 725 sc->debug.stats.rxstats.decrypt_busy_err); 726 727 PHY_ERR("UNDERRUN", ATH9K_PHYERR_UNDERRUN); 728 PHY_ERR("TIMING", ATH9K_PHYERR_TIMING); 729 PHY_ERR("PARITY", ATH9K_PHYERR_PARITY); 730 PHY_ERR("RATE", ATH9K_PHYERR_RATE); 731 PHY_ERR("LENGTH", ATH9K_PHYERR_LENGTH); 732 PHY_ERR("RADAR", ATH9K_PHYERR_RADAR); 733 PHY_ERR("SERVICE", ATH9K_PHYERR_SERVICE); 734 PHY_ERR("TOR", ATH9K_PHYERR_TOR); 735 PHY_ERR("OFDM-TIMING", ATH9K_PHYERR_OFDM_TIMING); 736 PHY_ERR("OFDM-SIGNAL-PARITY", ATH9K_PHYERR_OFDM_SIGNAL_PARITY); 737 PHY_ERR("OFDM-RATE", ATH9K_PHYERR_OFDM_RATE_ILLEGAL); 738 PHY_ERR("OFDM-LENGTH", ATH9K_PHYERR_OFDM_LENGTH_ILLEGAL); 739 PHY_ERR("OFDM-POWER-DROP", ATH9K_PHYERR_OFDM_POWER_DROP); 740 PHY_ERR("OFDM-SERVICE", ATH9K_PHYERR_OFDM_SERVICE); 741 PHY_ERR("OFDM-RESTART", ATH9K_PHYERR_OFDM_RESTART); 742 PHY_ERR("FALSE-RADAR-EXT", ATH9K_PHYERR_FALSE_RADAR_EXT); 743 PHY_ERR("CCK-TIMING", ATH9K_PHYERR_CCK_TIMING); 744 PHY_ERR("CCK-HEADER-CRC", ATH9K_PHYERR_CCK_HEADER_CRC); 745 PHY_ERR("CCK-RATE", ATH9K_PHYERR_CCK_RATE_ILLEGAL); 746 PHY_ERR("CCK-SERVICE", ATH9K_PHYERR_CCK_SERVICE); 747 PHY_ERR("CCK-RESTART", ATH9K_PHYERR_CCK_RESTART); 748 PHY_ERR("CCK-LENGTH", ATH9K_PHYERR_CCK_LENGTH_ILLEGAL); 749 PHY_ERR("CCK-POWER-DROP", ATH9K_PHYERR_CCK_POWER_DROP); 750 PHY_ERR("HT-CRC", ATH9K_PHYERR_HT_CRC_ERROR); 751 PHY_ERR("HT-LENGTH", ATH9K_PHYERR_HT_LENGTH_ILLEGAL); 752 PHY_ERR("HT-RATE", ATH9K_PHYERR_HT_RATE_ILLEGAL); 753 754 retval = simple_read_from_buffer(user_buf, count, ppos, buf, len); 755 kfree(buf); 756 757 return retval; 758 759 #undef PHY_ERR 760 } 761 762 void ath_debug_stat_rx(struct ath_softc *sc, struct ath_rx_status *rs) 763 { 764 #define RX_STAT_INC(c) sc->debug.stats.rxstats.c++ 765 #define RX_PHY_ERR_INC(c) sc->debug.stats.rxstats.phy_err_stats[c]++ 766 767 u32 phyerr; 768 769 if (rs->rs_status & ATH9K_RXERR_CRC) 770 RX_STAT_INC(crc_err); 771 if (rs->rs_status & ATH9K_RXERR_DECRYPT) 772 RX_STAT_INC(decrypt_crc_err); 773 if (rs->rs_status & ATH9K_RXERR_MIC) 774 RX_STAT_INC(mic_err); 775 if (rs->rs_status & ATH9K_RX_DELIM_CRC_PRE) 776 RX_STAT_INC(pre_delim_crc_err); 777 if (rs->rs_status & ATH9K_RX_DELIM_CRC_POST) 778 RX_STAT_INC(post_delim_crc_err); 779 if (rs->rs_status & ATH9K_RX_DECRYPT_BUSY) 780 RX_STAT_INC(decrypt_busy_err); 781 782 if (rs->rs_status & ATH9K_RXERR_PHY) { 783 RX_STAT_INC(phy_err); 784 phyerr = rs->rs_phyerr & 0x24; 785 RX_PHY_ERR_INC(phyerr); 786 } 787 788 #undef RX_STAT_INC 789 #undef RX_PHY_ERR_INC 790 } 791 792 static const struct file_operations fops_recv = { 793 .read = read_file_recv, 794 .open = ath9k_debugfs_open, 795 .owner = THIS_MODULE 796 }; 797 798 static ssize_t read_file_regidx(struct file *file, char __user *user_buf, 799 size_t count, loff_t *ppos) 800 { 801 struct ath_softc *sc = file->private_data; 802 char buf[32]; 803 unsigned int len; 804 805 len = snprintf(buf, sizeof(buf), "0x%08x\n", sc->debug.regidx); 806 return simple_read_from_buffer(user_buf, count, ppos, buf, len); 807 } 808 809 static ssize_t write_file_regidx(struct file *file, const char __user *user_buf, 810 size_t count, loff_t *ppos) 811 { 812 struct ath_softc *sc = file->private_data; 813 unsigned long regidx; 814 char buf[32]; 815 ssize_t len; 816 817 len = min(count, sizeof(buf) - 1); 818 if (copy_from_user(buf, user_buf, len)) 819 return -EINVAL; 820 821 buf[len] = '\0'; 822 if (strict_strtoul(buf, 0, ®idx)) 823 return -EINVAL; 824 825 sc->debug.regidx = regidx; 826 return count; 827 } 828 829 static const struct file_operations fops_regidx = { 830 .read = read_file_regidx, 831 .write = write_file_regidx, 832 .open = ath9k_debugfs_open, 833 .owner = THIS_MODULE 834 }; 835 836 static ssize_t read_file_regval(struct file *file, char __user *user_buf, 837 size_t count, loff_t *ppos) 838 { 839 struct ath_softc *sc = file->private_data; 840 struct ath_hw *ah = sc->sc_ah; 841 char buf[32]; 842 unsigned int len; 843 u32 regval; 844 845 regval = REG_READ_D(ah, sc->debug.regidx); 846 len = snprintf(buf, sizeof(buf), "0x%08x\n", regval); 847 return simple_read_from_buffer(user_buf, count, ppos, buf, len); 848 } 849 850 static ssize_t write_file_regval(struct file *file, const char __user *user_buf, 851 size_t count, loff_t *ppos) 852 { 853 struct ath_softc *sc = file->private_data; 854 struct ath_hw *ah = sc->sc_ah; 855 unsigned long regval; 856 char buf[32]; 857 ssize_t len; 858 859 len = min(count, sizeof(buf) - 1); 860 if (copy_from_user(buf, user_buf, len)) 861 return -EINVAL; 862 863 buf[len] = '\0'; 864 if (strict_strtoul(buf, 0, ®val)) 865 return -EINVAL; 866 867 REG_WRITE_D(ah, sc->debug.regidx, regval); 868 return count; 869 } 870 871 static const struct file_operations fops_regval = { 872 .read = read_file_regval, 873 .write = write_file_regval, 874 .open = ath9k_debugfs_open, 875 .owner = THIS_MODULE 876 }; 877 878 int ath9k_init_debug(struct ath_hw *ah) 879 { 880 struct ath_common *common = ath9k_hw_common(ah); 881 struct ath_softc *sc = (struct ath_softc *) common->priv; 882 883 if (!ath9k_debugfs_root) 884 return -ENOENT; 885 886 sc->debug.debugfs_phy = debugfs_create_dir(wiphy_name(sc->hw->wiphy), 887 ath9k_debugfs_root); 888 if (!sc->debug.debugfs_phy) 889 return -ENOMEM; 890 891 #ifdef CONFIG_ATH_DEBUG 892 if (!debugfs_create_file("debug", S_IRUSR | S_IWUSR, 893 sc->debug.debugfs_phy, sc, &fops_debug)) 894 goto err; 895 #endif 896 897 if (!debugfs_create_file("dma", S_IRUSR, sc->debug.debugfs_phy, 898 sc, &fops_dma)) 899 goto err; 900 901 if (!debugfs_create_file("interrupt", S_IRUSR, sc->debug.debugfs_phy, 902 sc, &fops_interrupt)) 903 goto err; 904 905 if (!debugfs_create_file("rcstat", S_IRUSR, sc->debug.debugfs_phy, 906 sc, &fops_rcstat)) 907 goto err; 908 909 if (!debugfs_create_file("wiphy", S_IRUSR | S_IWUSR, 910 sc->debug.debugfs_phy, sc, &fops_wiphy)) 911 goto err; 912 913 if (!debugfs_create_file("xmit", S_IRUSR, sc->debug.debugfs_phy, 914 sc, &fops_xmit)) 915 goto err; 916 917 if (!debugfs_create_file("recv", S_IRUSR, sc->debug.debugfs_phy, 918 sc, &fops_recv)) 919 goto err; 920 921 if (!debugfs_create_file("rx_chainmask", S_IRUSR | S_IWUSR, 922 sc->debug.debugfs_phy, sc, &fops_rx_chainmask)) 923 goto err; 924 925 if (!debugfs_create_file("tx_chainmask", S_IRUSR | S_IWUSR, 926 sc->debug.debugfs_phy, sc, &fops_tx_chainmask)) 927 goto err; 928 929 if (!debugfs_create_file("regidx", S_IRUSR | S_IWUSR, 930 sc->debug.debugfs_phy, sc, &fops_regidx)) 931 goto err; 932 933 if (!debugfs_create_file("regval", S_IRUSR | S_IWUSR, 934 sc->debug.debugfs_phy, sc, &fops_regval)) 935 goto err; 936 937 sc->debug.regidx = 0; 938 return 0; 939 err: 940 ath9k_exit_debug(ah); 941 return -ENOMEM; 942 } 943 944 void ath9k_exit_debug(struct ath_hw *ah) 945 { 946 struct ath_common *common = ath9k_hw_common(ah); 947 struct ath_softc *sc = (struct ath_softc *) common->priv; 948 949 debugfs_remove_recursive(sc->debug.debugfs_phy); 950 } 951 952 int ath9k_debug_create_root(void) 953 { 954 ath9k_debugfs_root = debugfs_create_dir(KBUILD_MODNAME, NULL); 955 if (!ath9k_debugfs_root) 956 return -ENOENT; 957 958 return 0; 959 } 960 961 void ath9k_debug_remove_root(void) 962 { 963 debugfs_remove(ath9k_debugfs_root); 964 ath9k_debugfs_root = NULL; 965 } 966